The Moment It Works Is the Best Part! Picture their faces when they snap the right pieces together and suddenly the fan starts spinning, the rocket lights up, or planets appear on the wall. With the STEM Circuit Puzzle Board , kids experiment with real electrical circuits through hands-on puzzles that make cause and effect easy to see . Every circuit they complete brings a fun little “aha!” moment and a new challenge to try. 🧒 Ages 3+ 🧩 50 Built-In Puzzles 📵 Screen-Free: No Apps, No Wi-Fi 🔋 USB Rechargeable, No Batteries Needed 🔒 Snap-Together Pieces, No Loose Wires Product Specifications Material : ABS, Electronic Components What's in the box? : 1x STEM Circuit Puzzle Board 1x USB Charging Cable 1x Manual ⚠️ Not suitable for children under 3. This product should not be discarded as unsorted waste but must be sent to separate collection facilities for recovery and recycling. Customer Questions Is this a real circuit-building toy or just a puzzle game? It’s both! Kids connect the blocks to complete a real circuit, then watch what happens: the fan spins, the rocket lights up, or the projector turns on. It’s a hands-on way to learn how electricity works. Is it okay for younger kids? It’s recommended for ages 3 and up, with adult supervision. Little ones may need some help with the instructions at first, so start with the easier puzzles and work up as they get the hang of it. How many puzzles are included, and how do they work? There are 50 built-in puzzles. Kids follow each challenge, connect the blocks in the right order, and power up the components to solve it. The puzzles get trickier as they go. Does it need batteries, Wi-Fi, or an app? No apps and no Wi-Fi. It’s USB rechargeable, and the charging cable is included. Is the projector bright enough to actually see? For the best view, dim the lights and point the projector at a nearby wall or ceiling. How clear it looks depends on how dark the room is and how close it is to the surface.